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| Number | Title | Issue Date |
| 7967978 | Method and apparatus for filter conditioning An apparatus for preconditioning a filter media includes a reservoir containing a liquid; a pump operatively connected and in fluid communication with the reservoir; a filter housing operatively connected and in fluid communication with the reservoir and the pump, a... | 06/28/2011 |
| 7632398 | Filter and method of filtering a fluid A filter including a first chamber; a second chamber; a piston having a head portion disposed in the first chamber and a rod portion disposed in the second chamber; a third chamber containing a filter medium, having an inlet communicating with the second chamber and... | 12/15/2009 |
| 7373949 | Fluid treatment system A control valve for a water treatment system which includes a turbine (110) rotatably mounted within a water receiving chamber. A nozzle assembly (122) defines first and second fluid paths, one of the flow paths may include a fluid pressure response va... | 05/20/2008 |
| 7371322 | Filtration system and dynamic fluid separation method A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. The filtration system may include one or more porous membranes which are anchored or secured on their periphery with a large open work... | 05/13/2008 |
| 7351899 | Quick action drum lug assembly and method Lug assemblies and associated methods of attaching a drum head to a drum body. The lug assembly may comprise a lug body having a seating surface; an elongate link having a proximate end disposed proximate the drum head and a distal end disposed distal from the drum ... | 04/01/2008 |
| 7335312 | Centrifuge with combinations of multiple features A centrifuge with combinations of multiple features is disclosed. In one aspect, a centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a sleeve. The fluid separation wall rotates around the axis of rotation.... | 02/26/2008 |
| 7320750 | Centrifuge with controlled discharge of dense material A centrifuge with controlled discharge of dense materials disclosed. A centrifuge includes a fluid separation wall placed within a sleeve to form a containment zone therebetween. The fluid separation wall aligns and rotates parallel to an axis of rotation. A recepta... | 01/22/2008 |
| 7309422 | Fryer filtration arrangement A fryer filtration arrangement utilizes certain automated components. ... | 12/18/2007 |
| 7294274 | Filtration system with enhanced cleaning and dynamic fluid separation A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. Acoustic, vibration and sonic energy may be used to clean associated filter media to allow substantially continuous filtration of proc... | 11/13/2007 |
| 7291267 | Molecular separator The present invention discloses a method and apparatus for separating particles and dissolved matter from a fluid stream. Specifically, the present invention includes a first pressure source which transports untreated fluid into a separator annulus with a filter ele... | 11/06/2007 |
| 7282147 | Cleaning hollow core membrane fibers using vibration A filtration system is provided with hollow membrane filter elements operable to remove solids, particulate and colloidal matter from a process fluid. Acoustic, vibration and ultrasonic energy may be used to clean exterior portions of the hollow membrane filter elem... | 10/16/2007 |
| 7244357 | Pumps for filtration systems Improvements in product water throughput from a reverse osmosis (RO) membrane filter achieved by thinner feed spacers in the RO element, enhanced recovery (ratio of permeate to feed), pressure recovery of the retentate fluid pressure opposing the feed water pressure... | 07/17/2007 |
| 7238279 | Impulse-responsive rotary actuator for storm drain barrier not disabled by immersion A pivoted gate across an opening from a gutter into a collector basin. An actuator inside the basin is insensitive to slow flow rates, but includes a rotor with vanes that actuate an opening linkage at sufficiently high rates of flow. A float is included in the actu... | 07/03/2007 |
| 7175748 | Subsea production system A subsea well fluid processing system has a separator for separating heavier and lighter components of well fluid flowing from a subsea well and directing the lighter components to flow to a surface processing facility. A choke is located downstream of the separator... | 02/13/2007 |
| 7144500 | Variable speed waste removal system The invention is directed to a system for removing waste material from a fluid flowing in a channel. This system may incorporate the use of a trap for collecting the waste material while allowing the fluid to pass; a rake for removing the waste material away from th... | 12/05/2006 |
| 7135106 | Portable water purifier There is disclosed a device adapted to provide water purified to human consumption level, and arranged for connection to a water supply. The device comprises a water purifier, a container for purified water and connections between the water purifier and the purified... | 11/14/2006 |
| 7128092 | Separating arrangement for treatment of fluids An arrangement for separating a fluid from admixtures has at least a first and a second separation unit. The separation units are of the type using an increased pressure or pressure difference for their function and have improved performance with increased pressure.... | 10/31/2006 |
| 7117559 | Support system for pocket doors A support system for mounting a door, such as a pocket door, on an overhead track is disclosed. The system cooperates with carriage that includes a support rod having a discontinuity at a lower end. The system uses bracket that is adapted for mounting along the uppe... | 10/10/2006 |
| 7069912 | Fuel filter and fuel supply system A fuel filter includes: a filtration chamber consisting of an inner cylinder and an outer cylinder disposed concentrically with a predetermined space, a bottom part that closes an opening end on one end side of the inner cylinder and the outer cylinder, and a lid pa... | 07/04/2006 |
| 7008530 | Water softener A water softener employs a vessel, a distributor with a manifold body associated to said vessel and a valve control device. A control unit programs operation of the softener. An actuator unit has a cylinder divided into a first chamber and a second chamber. The actu... | 03/07/2006 |
| 7008529 | Water treating device A water treating device includes a water container for containing water; an electrolyzing chamber for sterilizing water; a water treatment line which couples the electrolyzing chamber with the water container; a sensor for measuring residual chlorine concentration; ... | 03/07/2006 |
| 6962657 | Water treatment system A water treatment system for removing hard ions from source water. The water treatment system is of the type that includes a pair of ion-exchange water softener tanks connectable to a source of pressurized water and with a water system to supply softened water to th... | 11/08/2005 |
| 6916424 | Method and apparatus for a hemodiafiltration delivery module This invention provides a method and apparatus for a hemodiafiltration delivery module that is used in conjunction with a UF controlled dialysis machine to enable hemodiafiltration therapy to be performed. The advantage is that one can fully utilize a current functi... | 07/12/2005 |
| 6905604 | Method of converting feedwater to fresh water A method is provided for converting feedwater to fresh water utilizing existing water pressures and high flow rates. At least one reverse osmosis unit is disposed in a feedwater supply conduit. Feedwater is conveyed through the supply conduit and the reverse osmosis... | 06/14/2005 |
| 6884354 | System and process for the treatment of wastewater A system and process for the treatment of wastewater in a series of sequencing batch reactor basins wherein wastewater is sequentially fed, treated and discharged on a continuous basis. ... | 04/26/2005 |
| 6790362 | Efficiency mode for water softener The present invention provides a controller for a water softener having an ion exchange resin capable of receiving hard water ions from hard water during a softening step and releasing the hard water ions during a regeneration step. The controller includes a process... | 09/14/2004 |
| 6783748 | Process for producing purified aqueous hydrogen peroxide solution A process for producing a purified aqueous hydrogen peroxide solution, comprising passing a charged aqueous hydrogen peroxide solution containing impurities through a purifier tower packed with an ion exchange resin, a chelate resin or an adsorption resin to thereby... | 08/31/2004 |
| 6767471 | Hydrate desalination or water purification An apparatus is disclosed which allows the hydrate formed in the hydrate formation region of a desalination fractionation apparatus to be cooled as it rises in the apparatus. This has the beneficial effect of increasing its stability at lower pressures and reducing ... | 07/27/2004 |
| 6604914 | Pump for sea water desalination systems by reverse osmosis This pump has two end chambers (2, 3) in which are housed two pistons (4, 5) which pump sea water towards an reverse osmosis membrane (7), and a central chamber (8) in which a sliding block is housed, activated by displacement of the pistons (4 and 5) per... | 08/12/2003 |
| 6599425 | Bioremediation of nitrate contaminated groundwater The invention disclosed relates to a method and apparatus for the denitrification of groundwater in situ in an aquifer under substantially anaerobic conditions, the method comprising (a) providing a network, including an extraction well for removal of gro... | 07/29/2003 |
| 6383389 | Wastewater treatment system and method of control A wastewater treatment system for treating a wastewater stream from industrial and municipal sources uses a control system to sequence and supervise the treatment steps in a batch flow mode of operation or a continuous flow mode of operation. In operation... | 05/07/2002 |
| 6287457 | Water treatment device having volumeter driven monitoring discs A water treatment device wherein the water during treating is brought into contact with a treatment medium (29), whereby this treatment medium (29), either by means of a regeneration medium (42) or not, is regenerated regularly and whereby, a regulator (5... | 09/11/2001 |
| 6270658 | Drinking water supply apparatus To bring maximum sterility in a stationary drinking water supply installation with a water tank, the invention provides a method for filling a drinking water installation in which, after filling a tank with fresh water, the water is circulated at least ov... | 08/07/2001 |
| 6203696 | Fluid driven pumps and apparatus employing such pumps A reverse osmosis or filtration system uses one or more hydraulic intensifiers (integrated motor and pump) to provide all the high pressure fluid to a semi-permeable membrane or filter, the intensifier being powered by the high pressure flushing flow leav... | 03/20/2001 |
| 6083187 | Method and apparatus for treating blood The invention pertains to a method and apparatus for treating blood. If pressure constraints occur during the execution of blood treatment, the pump flow rates are rapidly decelerated to remove the pressure constraints so that the treating operation will ... | 07/04/2000 |
| 6030525 | Cost-orientated control of a regenerable filter A process of cost-optimized control of a mechanical filter that is situated in a flow of cooling water driven by a cooling water pump in a heat exchanger and that can be regenerated by means of a flushing system involves the following steps: at least one ... | 02/29/2000 |
| 5868937 | Process and system for recycling and reusing gray water A process and system recycles and reuses gray water generated by dishwashers, showers, carwashes, and clothes washers while maintaining the same cleaning performance as current systems. Hollow-fiber membrane ultrafiltration is used to reduce fresh water s... | 02/09/1999 |
| 5820752 | Methods and apparatus for recycling used antifreeze/coolant A recycling apparatus which preferably treats used antifreeze/coolant in four cycles is disclosed. The recycling apparatus includes a number of tanks for storing the antifreeze/coolant during the various treatment cycles, a number of containers for storin... | 10/13/1998 |
| 5804080 | Computer controlled method of operating a swimming pool filtration system A method of operating a filter system of a swimming pool in proportion to the degree of contamination of the water in said pool by processing a signal representative of the number of persons within the pool and other values characteristic of the pool and ... | 09/08/1998 |
| 5744034 | Hydraulic circuit A hydraulic circuit includes a fluid pressure inlet line (1); a fluid pressure delivery line (2); and a filter unit (FU) interposed between the inlet line (1) and the delivery line (2), with the circuit incorporating an automatic back flushing facility. T... | 04/28/1998 |
